Centrifugal pump.



PATENTED JAN. 20, 1903.

L. LEBLANC.

GENTRIFUGAL PUMP.

APPLIoA'rIoN FILED Dnc. 17, 1901.

N0 MODEL.

s SHEETS-SHEET 1.

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No. 718,642. PATENTBD JAN.. 20, 1903'. L. LEBLANC.

GBNTRIFUGAL PUMP.

PPLIUATION FILED DEO.17, 1901.

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PATENTED JAN. 20,1903. L. LEBLANC.

CENTRIPUGAL PUMP.

APPLICATION FILED DBO. 17, 1901.

3 SHEETS-SHEET 31 @IHM/neg S Miren Armar @muon LON LEBLANC, OF RUTLAND, VERMONT.

CENTRll-'UGAL PUlVl P.

SPECIFICATION forming part of Letters Patent No. 718,642, dated January 20, 1903.

Application filed December 17,1901. Serial No. 86,289. (No model 4 To all whom t may con/cern:

Be it known that I, LoN LEBLANC, a citizen of the United States', residing at Rutland, in the county of Rutland and State of Vermont, have invented certain new and' useful Improvements in Centrifugal Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in rotary or centrifugal pumps.

The objects of the invention are to effect facility of operation or action, to dispense with all packing and hand lubrication, to render the Working parts self-lubricating, to reduce friction or wear and tear, to simplify construction, to promote durability, to provide forinterchangeability of mechanism,and to otherwise add to the practicability and utility of the pump.

It consists of the sundry combination of parts, including their construction and arrangement, substantially as hereinafter more fully disclosed, and specifically pointed out by the claims.

In the accompanying drawings, forming part of this specification and illustrating the preferred embodiment of my invention, Figure 1 is a plan View thereof. tional elevation taken on the line om; of Fig. l. Fig. 3 is also a sectional elevation at right angles to the section-plane of Fig. 2, taken on the line y y of Fig. 1. Fig. 4 is a section taken on the line z z of Fig. 3. Fig. 5 is a planl View of the piston removed from its containing-chamber. Fig. 6 is a modified form of bracket for the piston stem or rod. Fig. '7 is a broken section taken on the dotted line of Fig. 4.

Latitude is allowed herein as to details, as they may be changed according to circumstances without departing from the spirit of my invention and the same yet remain intact and be protected.

In carrying out my invention I arrange within a suitable closure or casing 1, in the lower part thereof, preferably a separate closure or chamber 2, comprising two. horizontally-separable parts or sections 2a 2b suitably connected together, being preferably produced at diagonally-opposite corners with Fig. 2 is a secwith their lower ends screwed into the bot-l tom of the casing 1. In the meeting surfaces of said chamber-sections at or near one corner are produced, preferably, short concaved channels, jointly forming the water-discharge passage or port 8, and with said port preferably communicates a delivery-pipe 9, screwed into the casing 1. The piston 5, being in its general construction cylindric, has its stem or' rod 5a preferably screwed into the threaded walls of a central opening 5b, extending through a central part or disk of said piston. Said stem or rod itself has its lower end bored to a suitable depth, as at 5C, to receive a step or support 3, preferably secured centrally in the bottom of the casing or closure 1 and passing through the bottom of the piston-chamber 2. Said step has in its upper end a concavity or depression to receive a spherical 'or ball bearing 3?, engaging the concaved seat 5, formed by the upper end of the bore 5c in the lower end of the piston or stern 5a, said seat having a preferably hardened surface. Said piston rod or stem is equipped witha pulley 5d, adapted to be engaged or driven by a suitable belt (not shown) as one form of actuating the piston. Said piston 5 has, as above noted, a central disk-like part 5X, preferably beveled more or lless upon its upper and lower surfaces or edges at the periphery. Between said central disk-like part and the top and bottom portions 5e 5f, respectively, of said piston are produced radial arms or partitions 5W, preferably cast integral with said central part. Said arms or partitions 5XX increase in their horizontal surfaces or areas from the inner edges or ends outwardly toward and coincide at their outer edges with the peripheral outline of the piston. The butt or rear edge or surface of each arm or partition partially extends in a radial line with relation to the center or rod of the piston and partially tangentially to said center or rod or at an angle to the radial portion at less than a right angle. The front edge or surface of each arm extends from a point removed a short distance from said rod or center straight outwardly parallel with the radial or straight portion of the rear edge of the opposite arm and then curves IDC or extends in a corresponding or coincident angle with the angular edge of said rear edge of the opposite arm. Thus a plurality or number of corresponding water ways or passages 6 are formed by and between each series of said ar|ns,the function of which will presently appear. 'lhe top and bottom portions 5e 5f of said piston have each a preferablyT circular opening or orifice 5g 5 centrally therethrough, respectively. The opening or orifice 5g eects communication between the upper water-chamber of the casingor closure 1 and the upper series of water ways or passages of the piston via a central corresponding opening 5M in the top of the piston-chamber2 for actuating or driving said piston, the function of the openingr or orifice 5 being hereinafter disclosed. The under side of the top of the piston-chamber 2 has depending therefrom around the orice or opening bb a circular flange or guard 5'1 to prevent the water flowing or being forced back through said orice in event of any obstruction occurring in the pump. Also the upper surface of said piston-chamber top is preferably dished or concaved centrally, as at 51, to drain or conduct the water in the upper or water chamber of the casing or closure 1 to and through the central orifice lb in delivering the water to the upper series of piston water-passages.

In the upper surface of the bottom of the casing or closure 1 is a water chamber or passage 4, extending, preferably, diagonally therein from near the step or support 3 t0- ward and stopping adjacently to one corner of said closure or casing. The bottom of the piston-chamber 2 has an opening or oritice 4L therethrough, coinciding with the inlet end of said passage or channel, and to the inner surface of the bottom of said pistonchamber is secured a circular upstandng flange or guard 4X, with its upper end or edge entering the orifice or opening 5 of the piston contiguously to its shaft-supporting step 3, the function of which will be presently disclosed. Communicating with the opposite end of the chamber or passage 4 isa vertical passage 4b, (see particularly Fig. 7,) with a pipe-section 4C preferably screwed into its upper end and forming an upward continuation or extension thereof. The upper end of said pipe-section may stop near the waterlevel in the water-chamber of the casing or closure 1 or even extend thereabove for passing or delivering water into the channel or passage 4, the extension of said pipe-section being adapted should it be desired to pass air into the latter in lieu of water.

It will be observed that by passing water from the water-chamber ofthe easing or closure 1 into and through the pipe-section 4, the chamber or passage 4, and via the parts 4 4X, and 5h into the piston-chamber it will be delivered around the piston-shaft step 3, the same passing also up into the socket or bore 5CC and surrounding the bearing of said shaft. This will have the effect, it is believed, to lubricate 'the'parts or bearing as well as cushion, by the buoyant action of the water, the same, thus dispensing with all packing and the usual form of lubrication which may be used at this time for that purpose. Also it is further observed that the sedimentary portion of the water, including gritty substances, gravel,&c., settling toward the bottom of said water-chamber and naturally passing to the upper series of piston buckets or passages, Ithe upper portion of the water will be practically free of all such objectionable or injurious substances and will therefore be permitted to be delivered accordingly to said shaft bearing and other parts in the manner above pointed out, thus be unattended with the otherwise impairingI or premature wearing action thereon. This water passing via the lower series of piston buckets or water-passages to the piston-shaft bearing, tbc., is carried out by the centrifugal action generated by the movement of the former and discharged with the discharged water from the upper series of piston buckets or passages, as is apparent.

Arranged removably and adjustably contiguously to the channels forming the discharge-port 8, in suitable recesses produced in the piston-chamber sections,is a hard wearpiece 10. Said hard-metal wear-piece as it wears away'more or less from frictional contact with the periphery or face of the piston when the latter is an action is moved or adjusted inwardly to compensate such Wear by manipulation of the adjusting -screw 10a. Said delivery-pipe 9 has an intermediate discharging valved pipe 11, adapted to overhang and discharge into a supplemental chamber or receptacle 12, fixed to and having its upper edge a short distance above the casing or closure. Communication between said casing or closure 1 and the receptacle is preferably effected through a valved opening 13 for delivering water, the., into said casingfor instance, when starting the pumping operation also for holding water, dac., Aback when the pump is not in operation. The valve 11 in the pipe 11 is designed more particularly for eecting the discharge and keeping everything out of the pump when its operation is stopped. This is eifected after rst closing the valve 14, presently described, by opening the valve 11 and blowing out the remaining contents of the pump via the pipe 9 and pipe 11, the latter discharging such contents into the receptacle 12. The valve 14 for closing the orifice or opening 13 of the receptacle or chamber 12, which valve is opened when it is desired to deliver the contents of said receptacle into the pump-casing, preferably comprises a horizontal handled rod or shaft 14, axially supported in suitable bearings 14, secured to the side of the receptacle 12 next to the casing 1, and the valve proper, 14C, preferably a plate rigidly secured to said rod between its bearings and having secured thereto a disk of leather or the like, as will ICO IIO

be readily understood, is adapted to cover or close the opening or orifice 13.

A suitable bracket or casing 15 with a horizontal angular foot or base 15, suitably secured or bolted to the top edge of the receptacle 12, has spaced-apart tubular extensions or arms 15b to receive and steady the stem or rod 5a of the pist-on 5, as when driven by a belt and the pulley 5d, above referred to.

As shown in Fig. 6, I may employ in lieu of the aforesaid bracket a bracket 16 in case it should be desired to drive the piston from a horizontal shaft. Said bracket preferably comprises a tubular bearing 16a, adapted to receive the upper end of the piston stem or rod and to house or inclose a beveled pinion or gear applied to said stem or rod and asecond similar bearing 1Gb, adapted to receive a horizontal shaft, and a tubular housing or closure 16, arranged diagonally or in an inclination between and integral with the bearings 16a 1Gb to inclose or house an intermediate shaft and beveled gearing on said horizontal shaft and,said intermediate shaft, as will be readily understood.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a centrifugal or rotary pump, an impeller having two series of water passages or buckets, with its shaft-bearing, a casing or closure having an upper water-chamber and alowerchambercontainingsaidim peller,said upper chamber initially wholly receiving the water passing through said buckets or passages, and means for conducting that portion ofvsaid water freed of sediment or grittysubstances laterally of said lower chamber and delivering it up through the bottom of the last-named chamber, past. said shaft-bearing,

1 to the lower series of water passages or buckets of said impeller.

2. In a centrifugal rotary pump, the com? bination with a casing or closure, having an upper chamber and a lower chamber, and a piston, with a shaft-bearing, comprising a central partition ordisk, equipped with a plurality of spaced-apart arms, with an upper and lower series of water passages or ways therebetween, the upper ones of which series of waterways communicating with the upper one of said chambers, and the lower ones of which series of waterways communicating with a corresponding chamber, said upper water-chamber adapted to initially receive the whole of the water passing through the piston-buckets and to deliver that portion of said Water freed of sediment or gritty substances, via, said lower chamber, past said shaft-bearing, to the lower series of pistonbuckets,said arm having ou twardly-enlarging portions, alining the peripheral outline ofthe piston, with the butt or rear end of each arm adapted to partially stand radial to the center of the piston and partially tangential to said center, and the face or front portion ot' each arm extending in a straight line from a point near said center and parallel with a rear radial edge of the opposite arm and curved or extended ina corresponding angle with the angular edge portion of said opposite arm.

3. In a rotary pump, a closure or casing having an upper chamber and a lower chamber, and a water-passage arranged in the upper or inner su rface of said lower chamber, a piston with its shaft-bearing, having an upper series, and a lower series, ot water-passages and an oritlce communicating with the first-named passage, said -passage communicating with said upper chamber.

4. In a rotary pump, a casing or closure having an upper chamber, a lower chamber, and

la water-lubricating passage in the inner surone of said chambers having a discharge-port,

and a piston,with its shaft-bearing,having'two series ot' radial water ways or passages,with the walls or arms therebetween having their rear or butt edges partially radial and partially tangentially to the center of said piston, and their front edges or faces partially straight and partially extended in lines corresponding with said rear edges, said upper chamber having a passage connection with the lower series of water-passages of said piston.

6. In a rotary pump, acasing or closure having an upper chamber, and a lower chamber, a piston, with its shaft-bearing, having a central or subdividing portion, with two series of spaced-apart arms therebetween and the top and bottom of said piston, forming water ways or passages, the lower ones of which communicate with said upper chamber via, a passage opening up from the bottom of said lower chamber. l

'7. In a rotary pump, a casing or closure having an upper chamber, and a lower chamber, a piston, with its shaft-bearing, having a central or subdividing portion, with two series of spaced-apart arms therebetween and the top and bottom of said pistou, forming Water ways or passages, the lower ones of which communicate with said upper chamber, via, a passage opening up from the bottom of said lower chamber, said arms having their rear edges partially radial and partially tangential to the center of said piston and their front ed ges or faces partially straight and partially eX- tended in lines corresponding with said rear edges.

S. In a rotary pump, a casing or closure having an upper chamber and a lower chamber, a piston, withits shaft-bearing, having a central or subdividing portion beveled near its IOC) IIO

peripheral edge and having integral therewith two series of arms forming a series of water ways or passages, the lower ones of which communicate with said upper chamber, via, a passage opening up from the bottom of said lower chamber, said arms having their rear edges partially radial partially tangential to the center of said piston, and their front edges or faces partially straight and partially eX- tended in lines corresponding with said rear edges, and a piston-chamber having an upper chamber and a lower chamber and its upper or top portion provided around its central opening with an inner or depending fiange or guard concentric of the waterways of said piston, the lower water-passage communicating with said upper chamber via, a passage opening up from the bottom of said pistonchamber.

9. In a rotary pump, a casing or closure having an upper chamber, and a lower chamber, and the centrifugal piston arranged in said lower chamber, said piston-chamber having a central opening or orifice therein, an inner depending iiange. concentric of the water ways or passages of said piston, the lower water-passage communicating with said upper chamber, via, the passage opening up from the bottom of said piston-chamber.

10. In a rotary pump, a casing or closure for the piston having a delivery-pipe provided with a valved intermediate pipe and a supplemental chamber or receptacle arranged to receive the water from said intermediate pipe, substantially as set forth.

ll. In a rotary pump, a casing or closure for the piston,havingadelivery-pipe provided with a valved intermediate pipe, a supplement-al chamber or receptacle having a valved opening adapted to deliver into said casing or closure, said supplemental chamber adapted to receive the water from said intermediate pipe, substantially as set forth.

12. In a centrifugal or rotary pump, a rotary piston having two series of water passages or buckets, with its shaft-bearing, and a casing or closure having an upper waterchamber and a lower chamber containing said piston, said upper water-chamber adapted to deliver its contents, via said lower chamber into the lower series of buckets, and a passage leading from said upper chamber, and opening up through the bottom of said lower chamber and into the piston, around its shaftbearing, said upper chamber also adapted to deliver into the upper series of water passages or buckets of said piston, substantially as set forth.

13. In a centrifugal or rotary pump, a rotary piston having two series of water passages or buckets, with its shaft-bearing and a casing or closure having'an upper waterchamberand a lower chamber containing said piston, said upper water-chamber adapted to deliver its contents, via said lower chamber into the lower series of buckets, and a passage leading from said upper chamber, and opening up through the bottom of said lower .chamber and into the piston, around its shaftbearing, said upper chamber also adapted to deliver into the upper series of water passages or buckets of said piston, and said shaftbearing comprising a step or support entering a socket or bore in the lower end of the piston-shaft, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

LEoN LEBLANC.

Witnesses:

NORBERT PROULX, ERNEST LE BLANC. 

